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DK Science: Mobile Communications

EMERGENCY SERVICESMOBILE PHONESFIND OUT MOREMobile communications allows direct radio contact with people on the move, connecting them immediately, even in an emergency. Radio was originally…

DK Science: Telescopes

X-RAY OF BINOCULARSREFRACTING TELESCOPEREFLECTING TELESCOPEFIND OUT MOREJust as our eyes cannot see small objects, so they cannot see things that are very far off. Even when things are millions of…

DK History: English Civil War

WHO WAS “OLD IRONSIDES”? WHO WERE ROUNDHEADS AND CAVALIERS? WHO WERE THE DIGGERS AND LEVELERS? WHAT WAS THE COMMONWEALTH? FIND OUT MOREFrom 1642 to 1648 people in the British Isles were split by a…

Automotive Mechanic

What is this job like? Automotive service technicians and mechanics fix cars or light trucks that have broken down. They must be able to figure out the source of the problem quickly and correctly.…

Algebra: Introducing the Radical Sign

Introducing the Radical Sign Algebra Wrestling with Radicals Introducing the Radical Sign Simplifying Radical Expressions Unleashing Radical Powers Radical Operations Solving Radical…

United Nations Security Council

  The Security Council was constructed as an organ with primary responsibility for preserving peace. Unlike the General Assembly, it was given power to enforce measures and was organized as…

State Department Notes on Ghana

U.S. Department of State Background Note Index: Geography History Government and Political Conditions Economy Foreign Relations GEOGRAPHYGhana's population is concentrated along the coast and…

Interior, United States Department of the

(Encyclopedia) Interior, United States Department of the, federal executive department established in 1849, delegated custodian of U.S. natural resources, and whose head, the Secretary of the…

Goebbels, Joseph

(Encyclopedia) Goebbels, Joseph (Paul Joseph Goebbels)Goebbels, Josephpoul yōˈzĕf göbˈəls [key], 1897–1945, German National Socialist propagandist. He was kept out of the service in World War I by a…

Marsilius of Padua

(Encyclopedia) Marsilius of PaduaMarsilius of Paduamärsĭlˈēəs, păˈdy&oomacr;ə [key], d. c.1342, Italian political philosopher. He is satirically called Marsiglio. Little is known with certainty…